Multi-layer sealing bearing with dustproof structure

Abstract

The utility model discloses a multi-layer sealing bearing with a dustproof structure, and particularly relates to the technical field of bearings, the multi-layer sealing bearing comprises a bearing outer ring and a bearing inner ring, sealing assemblies are arranged on the front side and the rear side of the bearing outer ring, and each sealing assembly comprises an annular sealing plate. Two rubber sealing rings and two reinforcing ring plates are arranged on the sides, close to each other, of the two annular sealing plates, annular grooves are formed in the outer walls of the front side and the rear side of the bearing outer ring, and the outer walls of the rubber sealing rings and the outer walls of the reinforcing ring plates make contact with the inner walls of the annular grooves. The two annular sealing plates are arranged between the bearing outer ring and the bearing inner ring to play a dustproof role, meanwhile, the rubber sealing rings and the reinforcing annular plates on the annular sealing plates are tightly attached to the inner walls of the annular grooves and the outer wall of the bearing inner ring, the multi-layer sealing effect can be achieved, the sealing performance of the bearing is greatly improved, and in addition, the service life of the bearing is prolonged. And the arranged reinforcing ring plate can also play a role in supporting and reinforcing the rubber sealing ring, so that the sealing performance of the rubber sealing ring is further improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and more specifically to a multi-layer sealed bearing with a dustproof structure. Background Technology

[0002] Bearings are supporting components of mechanical transmission shafts, often referred to as the "joints" of machines. They can be divided into rolling bearings and sliding bearings, with rolling bearings being the most common term. Their main functions are to support rotating mechanical parts, reduce the coefficient of friction during transmission, guide shaft rotation, and support rotating parts. Rolling bearings generally consist of four parts: an outer ring, an inner ring, rolling elements, and a cage. Based on the shape of the rolling elements, rolling bearings are divided into two main categories: ball bearings and roller bearings.

[0003] For example, the existing technology disclosure number CN220523101U describes a rolling bearing that includes an outer ring, an inner ring, and several rollers. A raceway for mounting the rollers is formed between the outer ring and the inner ring. The bearing also includes a sealing ring, which effectively prevents external dirt and impurities from entering the rolling bearing and ensures a sealing effect.

[0004] However, the existing technology described above still has the following problems in use: when dust covers are installed on the bearings for dust prevention, the sealing effect of the dust covers is low, and the sealing rings need to be replaced after long-term use due to wear. However, since the sealing rings are fixedly connected to the dust covers, only the entire dust cover can be replaced. Based on this, the present invention provides a multi-layer sealed bearing with a dustproof structure. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a multi-layer sealed bearing with a dustproof structure. Two annular sealing plates are installed between the outer and inner rings of the bearing to achieve dustproofing. Simultaneously, the rubber sealing rings and reinforcing rings on the annular sealing plates are tightly fitted to the inner wall of the annular groove and the outer wall of the inner ring, achieving a multi-layer sealing effect and greatly improving the bearing's sealing performance. Furthermore, the reinforcing rings also provide support and reinforcement for the rubber sealing rings, further improving their sealing performance, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer sealed bearing with a dustproof structure, comprising an outer bearing ring and an inner bearing ring. Sealing components are provided on both the front and rear sides of the outer bearing ring. Each sealing component includes an annular sealing plate. Two rubber sealing rings and two reinforcing ring plates are provided on the side of each annular sealing plate that is close to each other. Annular grooves are machined on the outer walls of both the front and rear sides of the outer bearing ring. The outer walls of the rubber sealing rings and the reinforcing ring plates are in contact with the inner walls of the annular grooves. The inner walls of the rubber sealing rings and the reinforcing ring plates are in contact with the outer walls of the inner bearing ring. The rubber sealing rings and the reinforcing ring plates are connected to the annular sealing plates via connecting components.

[0007] In a preferred embodiment, the connecting assembly includes a connecting rod fixed to the inner wall of the annular sealing plate. Connecting holes adapted to the connecting rod are machined on both the two rubber sealing rings and the two reinforcing rings. The connecting rod passes through the connecting holes and abuts against the inner wall of the annular groove. The connecting rod supports the two rubber sealing rings and the two reinforcing rings, facilitating quick assembly and disassembly of the rubber sealing rings and reinforcing rings. Simultaneously, the abutment between the connecting rod and the annular groove improves the stability of the annular sealing plate.

[0008] In a preferred embodiment, there are multiple connecting rods and multiple connecting holes. The multiple connecting rods are arranged in a ring array on the annular sealing plate. The arrangement of multiple connecting rods can further improve the stability of the rubber sealing ring and the reinforcing ring plate.

[0009] In a preferred embodiment, one reinforcing ring plate is disposed between the two rubber sealing rings, and the other reinforcing ring plate is disposed between the annular sealing plate and the rubber sealing ring. The reinforcing ring plate can provide support and reinforcement at the rubber sealing ring, thereby improving the sealing effect of the rubber sealing ring.

[0010] In a preferred embodiment, the outer walls of both annular sealing plates are machined with a plurality of mounting holes arranged in a ring array. Each mounting hole is threaded with a fastening bolt. The annular sealing plates are detachably fixed to the outer ring of the bearing by the plurality of fastening bolts. Using a plurality of fastening bolts to fix the annular sealing plates can improve the connection between the annular sealing plates and the outer ring of the bearing.

[0011] In a preferred embodiment, a cage is provided between the outer ring and the inner ring of the bearing, and a plurality of equally spaced balls are provided inside the cage. Both the outer ring and the inner ring of the bearing are machined with grooves, and the plurality of balls are disposed between two grooves.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model provides dust prevention by setting two annular sealing plates between the outer ring and the inner ring of the bearing. At the same time, the rubber sealing ring and reinforcing ring plate on the annular sealing plate are tightly fitted with the inner wall of the annular groove and the outer wall of the inner ring of the bearing, which can achieve a multi-layer sealing effect and greatly improve the sealing performance of the bearing. In addition, the reinforcing ring plate can also support and reinforce the rubber sealing ring, further improving the sealing performance of the rubber sealing ring.

[0014] 2. The two rubber sealing rings and two reinforcing ring plates are supported by multiple connecting rods on the annular sealing plate. After the annular sealing plate is removed from the outer ring of the bearing, the rubber sealing rings and reinforcing ring plates can be pulled out. The structure is simple and the replacement is very quick. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the sealing assembly and bearing outer ring structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the sealing component structure of this utility model;

[0019] Figure 5 This is a structural diagram of the rubber sealing ring, reinforcing ring plate, and annular sealing plate of this utility model.

[0020] The attached figures are labeled as follows: 1. Bearing outer ring; 2. Bearing inner ring; 3. Sealing assembly; 4. Annular groove; 5. Connecting assembly; 6. Mounting hole; 7. Fastening bolt; 8. Cage; 9. Ball; 10. Groove.

[0021] 31. Annular sealing plate; 32. Rubber sealing ring; 33. Reinforcing ring plate;

[0022] 51. Connecting rod; 52. Connecting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Refer to the instruction manual appendix Figures 1-5This utility model provides a multi-layer sealed bearing with a dustproof structure, including an outer bearing ring 1 and an inner bearing ring 2. Sealing components 3 are provided on both the front and rear sides of the outer bearing ring 1. Each sealing component 3 includes an annular sealing plate 31. Two rubber sealing rings 32 and two reinforcing ring plates 33 are provided on the side of each annular sealing plate 31 that is close to each other. Specifically, one reinforcing ring plate 33 is located between the two rubber sealing rings 32, and the other reinforcing ring plate 33 is located between the annular sealing plate 31 and the rubber sealing rings 32. The reinforcing ring plates 33 provide support and reinforcement for the rubber sealing rings 32, thereby improving the stability and sealing performance of the rubber sealing rings 32.

[0025] The outer walls of the bearing outer ring 1 on both the front and rear sides are machined with annular grooves 4. The outer walls of the rubber sealing ring 32 and the reinforcing ring plate 33 are in contact with the inner walls of the annular grooves 4. The inner walls of the rubber sealing ring 32 and the reinforcing ring plate 33 are in contact with the outer walls of the bearing inner ring 2. The rubber sealing ring 32 and the reinforcing ring plate 33 are connected to the annular sealing plate 31 through the connecting assembly 5, which facilitates the quick disassembly and assembly of the rubber sealing ring 32 and the reinforcing ring plate 33 by the staff.

[0026] By providing annular sealing plates 31 on both the front and rear sides of the bearing outer ring 1, the annular sealing plates 31 can play a dustproof role between the bearing outer ring 1 and the bearing inner ring 2. At the same time, the rubber sealing rings 32 and reinforcing ring plates 33 on the annular sealing plates 31 are tightly fitted to the inner wall of the annular groove 4 and the outer wall of the bearing inner ring 2 under the pressure of the annular sealing plates 31. Furthermore, the two rubber sealing rings 32 can achieve a double-layer sealing effect, thereby effectively improving the sealing performance of the bearing. In addition, reinforcing ring plates 33 are also provided between the two rubber sealing rings 32 and between the rubber sealing rings 32 and the annular sealing plates 31. The reinforcing ring plates 33 can support and reinforce the rubber sealing rings 32, which can further improve the sealing performance of the rubber sealing rings 32.

[0027] Refer to the instruction manual appendix Figures 1-5 The connecting component 5 includes a connecting rod 51, which is fixed on the inner wall of the annular sealing plate 31. The two rubber sealing rings 32 and the two reinforcing ring plates 33 are all machined with connecting holes 52 that are adapted to the connecting rod 51. The connecting rod 51 passes through the connecting hole 52 and abuts against the inner wall of the annular groove 4. There are multiple connecting rods 51 and multiple connecting holes 52, and the multiple connecting rods 51 are distributed in a ring array on the annular sealing plate 31.

[0028] The workers first remove the annular sealing plate 31 from the outer ring 1 of the bearing, and then the two rubber sealing rings 32 and the two reinforcing ring plates 33 can be pulled out from the connecting rod 51 in sequence. The structure is simple and the replacement is very quick.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer sealed bearing with a dust-proof structure comprising a bearing outer ring (1) and a bearing inner ring (2), characterized in that: The bearing outer ring (1) is provided with sealing assemblies (3) on both sides, the sealing assemblies (3) include annular sealing plates (31), two annular sealing plates (31) are provided with two rubber sealing rings (32) and two reinforcing ring plates (33) on the side close to each other; The bearing outer ring (1) is provided with annular grooves (4) on the outer walls of both sides, the outer walls of the rubber sealing rings (32) and the reinforcing ring plates (33) are in contact with the inner walls of the annular grooves (4), the inner walls of the rubber sealing rings (32) and the reinforcing ring plates (33) are in contact with the outer wall of the bearing inner ring (2), the rubber sealing rings (32) and the reinforcing ring plates (33) are connected with the annular sealing plates (31) through connecting assemblies (5).

2. The multi-layer sealed bearing with dustproof structure according to claim 1, characterized in that: The connecting assemblies (5) include connecting rods (51), the connecting rods (51) are fixed on the inner walls of the annular sealing plates (31), the two rubber sealing rings (32) and the two reinforcing ring plates (33) are provided with connecting holes (52) matched with the connecting rods (51), the connecting rods (51) penetrate through the connecting holes (52) and abut against the inner walls of the annular grooves (4).

3. The multi-layer sealed bearing with dustproof structure according to claim 2, characterized in that: The number of the connecting rods (51) and the connecting holes (52) is multiple, and the multiple connecting rods (51) are arranged in an annular array on the annular sealing plate (31).

4. The multi-layer sealed bearing with dustproof structure according to claim 1, characterized in that: One of the reinforcing ring plates (33) is arranged between the two rubber sealing rings (32), and the other reinforcing ring plate (33) is arranged between the annular sealing plate (31) and the rubber sealing ring (32).

5. The multi-layer sealed bearing with dustproof structure according to claim 1, characterized in that: The outer walls of the two annular sealing plates (31) are provided with multiple mounting holes (6) arranged in an annular array, and each mounting hole (6) is internally threadedly connected with a fastening bolt (7), and the annular sealing plate (31) is detachably fixed with the bearing outer ring (1) through the multiple fastening bolts (7).

6. The multi-layer sealed bearing with dustproof structure according to claim 1, characterized in that: The bearing outer ring (1) and the bearing inner ring (2) are provided with a retainer (8), the retainer (8) is internally provided with multiple equidistantly distributed balls (9), and the bearing outer ring (1) and the bearing inner ring (2) are internally provided with rolling grooves (10), and the multiple balls (9) are arranged between the two rolling grooves (10).

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